var popUpWin = null;

function setPopUpWindow(URLStr, left, top, width, height) {
	if(popUpWin) {
		if(!popUpWin.closed) popUpWin.close();
	}
	popUpWin = window.open(URLStr, "popUpWin", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbar=no,resizable=no,copyhistory=no,width="+width+",height="+height+",left="+left+", top="+top+",screenX="+left+",screenY="+top+'');
	
	if(!popUpWin) {
		alert('In order to view this site, you have to allow popups in your browser!');
	}
	popUpWin.focus();
}

function setPopUpWindowWithScrollbars(URLStr, left, top, width, height) {
	if(popUpWin) {
		if(!popUpWin.closed) popUpWin.close();
	}
	popUpWin = window.open(URLStr, "popUpWin", "toolbar=no,location=yes,directories=yes,status=yes,menubar=yes,scrollbar=yes,scrollbars=1,resizable=yes,copyhistory=yes,width="+width+",height="+height+",left="+left+", top="+top+",screenX="+left+",screenY="+top+'');
	
	if(!popUpWin) {
		alert('In order to view this site, you have to allow popups in your browser!');
	}
	popUpWin.focus();
}

function setPopUpWindowCentered(URLStr, width, height) {
	setPopUpWindow(URLStr, (screen.width - width) / 2, (screen.height * 0.97 - height) / 2, width, height);
}